Saturday, April 27, 2013

Design a Rock

This experiment is from National Geographic Kids' book Jump Into Science:Rocks and Mineralsby Steve Tomecek! Kids create their very own sedimentary rock!materials:plastic cup (book says 7oz)glue1/2 cup sand1/2 cup small pebbles1. cover bottom of cup with sand2. pour glue on top (so all sand is covered)3. drop pebbles in a layer on top of glue4. add glue (cover pebbles)5. pour second layer of sand6. another layer of glue("cup should be half full")7. let dry for a week or until glue is hard8. peel cup away (cut with scissors)("if some glue is still wet, wipe with damp paper towel")